Reinforcement of the supporting-bodies or envelops of airships.



H. NAATZ. REINFORCEMENT OF THE SUPPORTING Bofims 0R ENVELOPSOF'AIRSHIPS. APPLICATION FILED APR. 29, 1913.

1,100,762. Patented June 23, 19M

the direction of its threads coincided with l the trajectories, thedeformation would not be done away with to a sufficient extent, as thefabric would still retain greater ex pansion in the direction oftrajectory than in the other directions. But when a certain superfluouscomponent in this direction is taken up by a separate part, thedeformation of the supporting body can be given such a direction that incase of an expansion, it would be converted into a regular body 2'. (2.,one which shows complete symmetry with respect. to a main axis, and forthat reason are used the separate supporting bands 6 which extend in thedirection of the trajectories of stresses.

Fig. 2 shows a convenient example of a connection of the said separatesupporting hands with the envelop ot' the supporting body for so called:non-rigid ships. In this figure c is a tubular casing connected to theenvelop of the balloon in the direction of the trajectories and withinthis tubular casing is loosely inserted the band L which constitutes asupporting band. According as the length of the band is adjusted, thebody will be m re or less restricted in the direction of thetrajectories, so that by this longitudinal adjustment it is possible tobring about the action described to the desired extent.

As in case of the so-called rigid air-ships the flillllfl-WUl'k of thesupporting body is exposed to stresses in the same way as the casing ofnon-rigid ships, since in case of rigid ships there is also acircumferential surface constituted by a flat figure, which is exposedto the similar strains, the inveir tion can be equally advantageouslyapplied in this case also.

What I do claim as my invention, and desire to secure by Letters Patentof the United States, isz- 1. In a transverse reinforcement for thesupporting bodies of airships, the combination of a supporting body witha load supporting belt and transverse bands exteudin from said loadsupporting belt around sai' supporting body in curves corresponding withthe direction of the trajectories of stresses. for reinforcing saidsupporting body. H

2. In a trai'ltt'ersc reinforcement for the supporting bodies ofairships, the combination of a supporting body with a load sup portingbelt secured thereto, adjustable transversebands secured to said loadsupporting belt and extending around said sup porting body in curvescorresponding with the trajectories of stresses, for reinforcing saidsupporting body and means for guiding the transverse bands loosely onthe envelop of the supporting bpdy.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witncsses.

HERMANN NAATZ. \Vi tnesses Fmax DrNoLINoER, Geoma- HEINsDoFF.

